The CMI RP125 Pulley

Incredible features at an unbeatable value!  Stainless Steel sideplates, two 4" Aluminum sheaves, Bearing, and Stainless Steel axle. 
MBS Rope Capacity Size Weight Efficiency
25000lbs 5/8" 9x4.75in 4lb 215.8%

Standard version: $145.65
NFPA version: $181.95