Ronstan Series 55 Single Swivel Head Ratchet Orbit Block, Auto/Manual Fire Extinguishers No tools required

No tools required

as long as you have a flat surface

They keep the block aligned correctly by pushing the lashing line to the outer edges of the block's head

the air itself absorbs the pharmaceutical grade oils

Mounting: ¼” x 20 female threads on bottom of light for mounting

Ronstan Series 55 Single Swivel Head Ratchet Orbit Block, Auto/Manual Fire Extinguishers No tools requiredNow you can enjoy the flexibility of setting up your ratchet blocks to suit yourself. Ronstan is the only company that offers a ratchet block with both auto and manual engagement modes. In the auto mode of the ratchet mechanism engages when load is applied, but switches off when it's released. This lets the sheet run out smoothly and freely great for rapid easing of the sheet and for gybing asymmetric spinnakers. In manual mode, the ratchet mechanism