Hales SB-1 Single Block without Shackle

Hales Micro precision ball bearing Single Block with Shackle Specs: Body length 17.5 mm Length including Shackle 23 mm Width 10.4 mm Body Thickness 5.1 mm Thickness across Shackle 8 mm Sheave Diameter 7.3 mm Maximum Line Size 2 mm Mass 2 grams
This product from Australia features:Stainless steel sidestraps for strength and to prevent corrosion Stainless steel balls, axle and sheave for smooth running under heavy load Balls and sheave cannot rub on side plates, resulting in minimum friction Recessed side plate to allow use of small diameter sheets without risk of the sheet sliding between the sheave and side plate