Size 3 fits all blades #15 and under. Size 4 fits blades #20 and up. These handles are stainless steel and floor grade which means it is for regular use, not an operating room. Well made, smooth, uniform in size. See web store for better picture and more information. Stainless steel. Available at the following quantity prices:

1-9 (click here): 1.25
10-39 (click here): 1.05
40-99 (click here): 0.93
100-249 (this page): 0.86
250+ (click here): 0.824

Or click here to get #3 handles.