---
product_id: 726096576
title: "SIGNI S/C Plastic Back Grinding Disc for Granite/Marble/Concrete and Glass(16 Grit, 4.5 inch) 5 Pack"
brand: "signi"
price: "$179"
currency: NZD
in_stock: true
url: https://www.desertcart.nz/products/726096576-signi-s-c-plastic-back-grinding-disc-for-granite-marble
store_origin: NZ
region: New Zealand
---

# Faster cutting speed 7-10x longer lifespan 4.5-inch precision fit SIGNI S/C Plastic Back Grinding Disc for Granite/Marble/Concrete and Glass(16 Grit, 4.5 inch) 5 Pack

**Brand:** signi
**Price:** $179
**Availability:** ✅ In Stock

## Summary

> ⚡ Grind faster, last longer, and own every project like a pro.

## Quick Answers

- **What is this?** SIGNI S/C Plastic Back Grinding Disc for Granite/Marble/Concrete and Glass(16 Grit, 4.5 inch) 5 Pack by signi
- **How much does it cost?** $179 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nz](https://www.desertcart.nz/products/726096576-signi-s-c-plastic-back-grinding-disc-for-granite-marble)

## Best For

- signi enthusiasts

## Why This Product

- Trusted signi brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Unmatched Durability:** Lasts up to 10 times longer than traditional aluminum oxide discs—work smarter, not harder.
- • **Consistent, Even Finish:** Flat disc profile leaves a professional-grade surface every time—no uneven patches.
- • **Lightweight & Efficient:** Plastic back design reduces weight and loading, delivering smoother, faster grinding.
- • **Effortless Compatibility:** Fits most angle grinders without a backing pad for quick setup and less hassle.
- • **Aggressive Silicon Carbide Grit:** 16 grit ensures rapid material removal on granite, marble, concrete, and glass surfaces.

## Overview

The SIGNI S/C Plastic Back Grinding Disc is a 4.5-inch, 16 grit silicon carbide disc designed for aggressive, fast grinding on granite, marble, concrete, and glass. Its plastic back eliminates the need for a backup pad, making it lightweight and easy to use. Engineered to last 7-10 times longer than conventional aluminum oxide discs, it minimizes material loading and delivers a smooth, even finish—perfect for professionals demanding efficiency and durability.

## Description

S/C (Silicon Carbide) These grain types are very aggressive.  The grinding disc is flat with a plastic back.  The sanding disc fits most angle grinders and does not require a backing pad. The grinding disc attaches directly to the hand of the grinding machine. In comparison to depressed center wheels or resin fiber discs it is lighter, cuts faster, and grinds faster while leaving an even surface.  Qty included : 5 Pcs 4.5" grinding disc in one pack.

## Features

- 4 1/2" SiC 16 Grit Disc, 5 Pack.
- This disc has a plastic back and does not require a backup pad.
- It lasts up to 7-10 times longer than conventional aluminum oxide resin fiber discs.
- Its design minimizes the loading of material being ground on the disc.
- It cuts faster than a conventional grinding disc

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | SIGNI INDUSTRIAL (SHANGHAI)CO.,LTD |
| Item Weight | 330 g |
| Product Dimensions | 11.43 x 11.43 x 0.1 cm; 330 g |
| Size | 4.5 Inch |
| Material | 16 Grit |
| Item thickness | 5 Millimetres |
| Grit Number | 16 |
| Grit Description | Coarse |
| Batteries included? | No |
| Batteries Required? | No |

## Product Details

- **Grit material:** Aluminum Oxide,Carbide,Sic,Silicon
- **Product dimensions:** 11.4L x 11.4W centimetres
- **Brand:** SIGNI
- **Compatible devices:** Angle Grinder
- **Grit type:** Coarse

## Images

![SIGNI S/C Plastic Back Grinding Disc for Granite/Marble/Concrete and Glass(16 Grit, 4.5 inch) 5 Pack - Image 1](https://m.media-amazon.com/images/I/81nRFllaPRL.jpg)
![SIGNI S/C Plastic Back Grinding Disc for Granite/Marble/Concrete and Glass(16 Grit, 4.5 inch) 5 Pack - Image 2](https://m.media-amazon.com/images/I/911xTUxxqcL.jpg)
![SIGNI S/C Plastic Back Grinding Disc for Granite/Marble/Concrete and Glass(16 Grit, 4.5 inch) 5 Pack - Image 3](https://m.media-amazon.com/images/I/A1e-E6EWUzL.jpg)
![SIGNI S/C Plastic Back Grinding Disc for Granite/Marble/Concrete and Glass(16 Grit, 4.5 inch) 5 Pack - Image 4](https://m.media-amazon.com/images/I/819w0EI0QtL.jpg)
![SIGNI S/C Plastic Back Grinding Disc for Granite/Marble/Concrete and Glass(16 Grit, 4.5 inch) 5 Pack - Image 5](https://m.media-amazon.com/images/I/81xfO+Q1JFL.jpg)

## Available Options

This product comes in different **Size Name, Material Type** options.

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**Shop now:** [https://www.desertcart.nz/products/726096576-signi-s-c-plastic-back-grinding-disc-for-granite-marble](https://www.desertcart.nz/products/726096576-signi-s-c-plastic-back-grinding-disc-for-granite-marble)

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*Product available on Desertcart New Zealand*
*Store origin: NZ*
*Last updated: 2026-03-03*