Allen 16MM Optimist Sprit Block Select (See Table Below):AL-4068 16MM OPTIMIST SPRIT BLOCK - EACH 51 Connections 1/4" NPTF Female

51 Connections 1/4" NPTF Female Ports Stroke 178mm (7") Length 415mm (16

Engine run sensing: VSS will engage when the voltage on either the start or house battery reaches 13

Sold in a pack of 6 roller sleeves

Comes with 1 x clevis pin and ring and 3 x fixing bolts and nuts

Available in six sizes

Allen 16MM Optimist Sprit Block Select (See Table Below):AL-4068 16MM OPTIMIST SPRIT BLOCK - EACH 51 Connections 1/4" NPTF FemaleThe 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. Spec Sheet Part Description Sheave Dia mm Length mm Line Dia. mm Shackle Pin mm Break Load Kg. Weight gm RRP Inc VAT Unit AL 4068 Optimist sprit 16 46