Aluminum, 2 Slots. 2 "- 4.5"

Pulley two solid grooves of 2 to 4.5 "made of aluminum base AlSi12Cu (Fe).

Pilot hole
Oppressor 5/16 "

Aluminum pulley two slots AlSi12Cu (Fe) 

Type A = 1/2 inch, Type B = 5/8 inches. 

External diameter from 2 to 4.5 ". Two slots for Band type A or B. The inner diameter of the arrow is; pilot hole 3/8, ½, 5/8 and 3/4. The pulley can carry a 3/4-hole wedge. 16 as well as one or two oppressors of 5/16 Both are optional.

Manufactured according to the corresponding ISO or RMA standard, to optimize performance.