... . Iron back .2. Size:4" (100*16mm). 3. Number of page :45page.4. Matrix Angle:T27 (0-15°).Flexible flap disc ... kindAdhesiveBackingUsageA.ZA.CSynthetic ResinIron/Plastic It used for Regular steel.Stainless steel,Cast iron,ordinary carbon steel.Alloy steel,Non-ferrous ... and price list !... Flexible flap disc 4" iron back 45 page KBLD zirconium