For sale is a Boston Gear F633AF-32-B7 Gear Head Control N 9-25892-04 Manual for Gear Head here According to this manual this gear head is Quill type; 600A series; reducer size 3; number of reductions 3; Output flange mounted; input bore size 0.875; nema mtg 140TC/180C Gear ratio - 32:1 Inp. 1750 RPM; 2.45 - max HP; 2650 - output torque Input hole 7/8" Output Shaft 1-1/4" It wasn't ever mounted (see last 2 pic.) This unit has storage rust.