This is the RazoRock Super Knurl HD 316L Stainless Steel handle. Compatible with all RazoRock Razors and most 3 piece safety razors available on the market with a M5 x 8 thread.

RazoRock Handles are mechanically finished, ie not by hand. There may be micro imperfections which are not visible on the more expensive brand named razor handles. 

Length:  82 mm
Diameter:   14mm
Weight:  73  grams