Ronstan Series 40mm Single Cheek Block, SS Shackles unlike UHMW plastic tape which

unlike UHMW plastic tape which wears away quickly

21-304 1/8" wire 1/4"-28 L

Maximum line Ø (mm)16 mm

Blocks are easily disassembled with a single hex wrench

Ronstan Series 40mm Single Cheek Block, SS Shackles unlike UHMW plastic tape whichAll purpose (AP) blocks are a great all around solution. Self lubricating Acetal polymer sheaves running on polished stainless steel races perform equally well with dynamic loads and high static loads. For durability and a long service life, these blocks are the right choice for sheets, halyards and control line applications for cruising and racing. Can be mounted on masts and booms using the curved surface adapter. Can be stacked to create a double