Allen 25mm Triple Fixed Head High Tension Block & Becket teak This mastlock has a rubber

This mastlock has a rubber insert and should be clamped around the mast just under the deck

Manufactured from aluminium for light weight and durable performance

Fastener spacing (mm)27 mm

this device provides accurate and real-time wind direction information to sailors of all skill levels

Neoprene & nylon throughout for high maneuverability

Allen 25mm Triple Fixed Head High Tension Block & Becket teak This mastlock has a rubberThe Allen high tension stainless steel block range is specifically intended for use where wire, dyneema and spectra lines are loaded under high tension. The entire block is engineered using 316 stainless steel and the inner ball race sheave is CNC machined from solid giving unfailing results every time. Specification: Part No. AL4693 Sheave Dia. 25mm Length: 68mm Line Dia. 2 5mm Shackle Pin: 5mm Breaking Load: 750Kg Weight: 84g