Ronstan Double through-deck block series 30 is designed to make line adjustment easier on dinghies and traveler control lines

making it ideal for different lighting needs

Comes with an elegant brass end cap

Narrow zinc shaft anode with metal insert at the bolt hole

They are designed to be practical and easy to use with marine equipment

Nasa, Gasdetektor med Alarm, 134 x 70 x 28 mm, 12V BL127266 Ronstan Double through-deck block seriesThe Nasa gas detector is a safety instrument that detects dangerous gas levels in your boat. It consists of a sensor, which is placed low down, and an alarm unit that warns of potential explosive mixtures of gas and oxygen. Brand: Nasa Weight: 0. 63 kg Voltage: 12 V Product dimensions: 70 mm 134 mm 28 mm Made in: United Kingdom Package dimensions: Dimensions: 4 cm 14 cm 23 cm Gross weight: 0. 63 kg It does not take much to ignite the gas. A small