Ronstan Series 30 BB Stand-up Orbit Block - Swivel Head Navigation Chart Cleans and protects windows and

Cleans and protects windows and enclosures while helping to prevent water spotting

which adds 30" (76 cm) to any of the Shur-lok handles

Low friction 2-stage ball bearing system provides consistent performance over the full working load range

use when temperature is over 10-degree C

it is an all-surface cleaner

Ronstan Series 30 BB Stand-up Orbit Block - Swivel Head Navigation Chart Cleans and protects windows andRonstan Series 30 Ball Bearing Stand up Orbit Block, Swivel Head RF35140 Lightweight Highest working load in its class Secure, versatile and secure attachment Low profile and compact Applications Mainsheet systems and spinnaker sheets on dinghies to 5m (16ft) Halyard, vang and backstay applications on boats to 5m (16ft) Control line applications on larger yachts Materials Sheave: High compression strength carbon black Acetal Ball Bearings: High