60 mm Ball Bearing Block - Triple, Swivel, Cam Flat Base The BBB30 Double Block is

The BBB30 Double Block is a 30mm ball bearing block with a stainless attachment eye

The locking arm is spring-loaded to prevent accidential locking

a smaller secondary sheave and an integrated 38 mm composite cam cleat for efficient line handling

barber haulers

22 mm hard anodized standard track for M5 screws

60 mm Ball Bearing Block - Triple, Swivel, Cam Flat Base The BBB30 Double Block isThe BBB60 Triple Swivel Cam Block is a 60 mm ball bearing block with an integrated 38 mm composite cam cleat for quick adjustments and control. The cam cleat arm can be set to a variety of angles. The eye at the top of the cam cleat arm can be used as "dead end" for a cascade. The block is designed with a plastic washer acting as a swivel lock, enabling the shackle to be fixed in either 0 or 90. Delrin ball bearings and glass fiber reinforced cheeks