Ronstan Bullet Block  with shackle with ball bearings

Shackle orientation can be rotated 90 degrees increments

2” diameter for up to 3/8” line

Stamped RF14407 Series Double Over the Top Block. Stainless Steel cage and base provide a solid platform for clean leads. Delrin(tm) ball bearing sheaves ensure low-friction and high safe working loads.Sheave Dia. 2-3/8" (60 mm), Max Line 1/2" (13 mm), L 3-3/8" (86 mm), W 3-5/32" (80 mm), H 3-7/16" (87 mm), Bearing Height 2-5/16" (58 mm), Fastners (6), #10 RH (5 mm), C/C 2-13/16" (72 mm), SWL 1200 lbs. (545 kg), Weight 1 lb. 2 oz. (510 g)

Low-friction Bullet blocks lead control lines aft. They are compact and lightweight, with fast trim and release under high or low loads. 

New, never used, and never installed but shelf worn, dusty and has some minor scratches and fading from being in storage.