-29mm wide is also available 9103506 : 31*178 (14T) STEP 1 -Buff ridges, Black STEP 2 -Smooth, White STEP 3 -Shine, Gray 9103507 : 31*178 (14T) STEP 1 -Buff ridges, Black STEP 2 -Smooth, White STEP 3 -Shine, Gray 9103508 : 31*178 (14T) STEP 1 -Buff ridges, Black STEP 2 -Smooth, White STEP 3 -Shine, Gray 9103509 : 31*178 (14T) STEP 1 -Buff ridges, Black STEP 2 -Smooth, White STEP 3 -Shine, Gray 9103510 : 31*178 (14T) STEP 1 -Buff ridges, Black STEP 2 -Smooth, White STEP 3 -Shine, Gray