Yofuly 36PCS Sanding Discs Set;

Specification:
Material: nylon, silicon carbide, plastic
Green Disc: fine, appr 400-600 Grit
Red Disc: medium, appr 150 Grit
Brown Disc: coarse, appr 120Grit
Disc Pad Holder Size: 2" diameter & 1/4" shank
Disc Pad Size: 2 inch/5cm diameter
Max speed: 23,000Rpm

Package Includes:
12* Fine Surface Conditioning Disc, Green
12* Medium Surface Conditioning Disc, Red
12* Coarse Surface Conditioning Disc, Brown
1* 1/4'' Shank Holder

Tight Connection:
1. Come with a 1/4 inch shank roloc disc holder, unique safety torque spiral allows to replace sanding disc quickly, just twist it to remove or connect.
2. When sanding disc is working, thread direction of disc is opposite to the force of friction, which makes the connection between disc and tray/holder more and more tight, ensures steady working even in high speed.