Harken 234 Low-Friction Micro Block with attached shackle are compact and lightweight. They are ideal for 3/16” dacron support line for all dipoles and doublets. These high-quality blocks are considered the best available and stand up to all types of weather conditions. Mine have been in use at my QTH in the mountains of Vermont for over fourteen years and have not given me one problem whatsoever. Buy the best and stay away from the cheap hardware store steel ones that rust and seize up over time.

The shackle on the 234 allows you to disconnect the block to work on your support system or to lower the antenna down, without unthreading the entire length of dacron line.

Specifications: List Price $19.00 WITH FREE SHIPPING

Sheave Ø (mm) 22 mm

Sheave Ø (in) 7/8 in

Length (mm) 57 mm

Length (in) 2 1/4 in

Weight (g) 21 g

Weight (oz) 0.75 oz

Shackle pin Ø (mm) 5 mm

Shackle pin Ø (in) 3/16 in

Maximum line Ø (mm) 6 mm

Maximum line Ø (in) 1/4 in

Maximum working load (kg) 91 kg

Maximum working load (lb) 200 lb

Breaking load (kg) 544 kg

Breaking load (lb) 1200 lb