Revolution Counter

5 Digits
Quick Lever Reset ---- Left / Right
Drive ---- Left / Right / Both
Operation ---- Top Coming / Top Going
Std Ratio ---- 1 : 1
Other Ratio ---- 1 : 2, 1 : 3, 5 : 1, 10 : 1
Speed ---- 2000 rpm * Mounting holes ---- 4 Holes of 5.1 d