this book explains everything you need to know to maintain a marine diesel system

You'll find a 20mm block to suit most control line applications

Maximum Versatility

Weight: 34 g

Internal diameter 6

Harken 29/18 mm Zircon Twisted Fiddle 1251 WOMEN'S CASUAL/CREW this book explains everything youThe 1251 Twisted Fiddle is a true Zircon block with a unique twist. Its slim shape slides easily along the purchase system it inhabits, to remain upright where conventional double blocks tip, twist, or tangle. A fiddle is a better choice where the line moves in uneven sequence around the two Zircon sheaves. Maximum working load (kg) 91 kg Breaking load (lb) 600 lb Breaking load (kg) 273 kg Weight (oz) 0. 64 oz Weight (g) 18. 2 g Sheave (mm) 29 mm