21 • Use 36 grit and coarser for rough grinding . • Use 60 grit for imparting fine finishes or when grinding on narrow surfaces . It is the user’s responsibility to refer to and comply with ANSI B7 . 1 Vitrified Bond Mounted Points – W Shapes W Shapes   Catalog 5 Pc . 10 Pc . Shape Size Max . RPM Std . Pkg . Spec . Order No . Price Ea . Price Ea . Price Ea . W144 1/8 x 1/4 92,460 5 PACESETTER 38A60 M NOR24488 $ 0 . 74 $ 0 . 70 $ 0 . 67 W145 1/8 x 3/8 84,190 5 PACESETTER 38A60 M NOR24489 0 . 81 0 . 77 0 . 73 W146 1/8 x 1/2 76,820 5 PACESETTER 38A60 M NOR24491 0 . 81 0 . 77 0 . 73 W152 3/16 x 1/4 82,070 5 PACESETTER 38A60 M NOR24495 0 . 74 0 . 70 0 . 67 W153 3/16 x 3/8 73,880 5 PACESETTER 38A60 M NOR24496 0 . 81 0 . 77 0 . 73 W154 3/16 x 1/2 66,580 5 PACESETTER 38A60 M NOR24497 0 . 81 0 . 77 0 . 73 W160 1/4 x 1/4 75,330 5 PACESETTER 38A60 M NOR24501 0 . 74 0 . 70 0 . 67 W162 1/4 x 3/8 67,210 5 PACESETTER 38A60 M NOR24503 0 . 74 0 . 70 0 . 67 W176 3/8 x 1/2 50,460 5 PACESETTER 38A60 M NOR24517 0 . 79 0 . 75 0 . 71 W185* 1/2 x 1/2 44,470 5 PACESETTER 38A60 M NOR24526 0 . 79 0 . 75 0 . 71 W215 1 x 1/8 38,200 5 PACESETTER 38A60 M NOR24560 0 . 83 0 . 79 0 . 74 W220* 1 x 1 30,370 5 PACESETTER 38A60 M NOR24566 1 . 06 1 . 01 0 . 96 W235* 1 - 1/2 x 1/4 25,460 5 PACESETTER 38A60 M NOR24583 1 . 08 1 . 03 0 . 97 W236* 1 - 1/2 x 1/2 25,460 5 PACESETTER 38A60 M NOR24585 1 . 13 1 . 07 1 . 02 W237* 1 - 1/2 x 1 25,460 5 PACESETTER 38A60 M NOR24587 1 . 33 1 . 26 1 . 20 W242 2 x 1 19,100 5 PACESETTER 38A60 M NOR24592 1 . 71 1 . 62 1 . 54 1/8” Spindle *1/4 Spindle   W Shapes (D x T)