Production Introduction This Premium Xtra Power Depressed Center Grinding Disc 4-1/2" x 1/4" x 7/8"( 115x6.0x22mm) has the outer size d1= 4.5 inch (115mm), inner hole dimension d2= 7/8 inch(22mm) and the thickness b= 1/4 inch(6.0mm) .The 4 1/2 inch grinding discs belong to the Depressed Center Abrasive Disc used on freehand Type27 Xtra Power angle grinder machine for metal steel grinding and INOX steel grinding .The 4-1/2" x 1/4" x 7/8"(115x6.0x22mm) Depressed Center Grinding Wheel is mainly made of high quality Aluminum Oxide abrasive material and White Aluminum Oxide material. The Aluminum O
Premium Xtra Power Freehand Depressed Center 4-1/2" x 1/4" x 7/8"( 115x6.0x22mm