General description Open Body Turnbuckle 1/2" x 12" are designed for tightening, tensioning, and adjusting in various wire rope applications. These turnbuckles feature an open body design, allowing users to monitor the rate of turning easily. They are commonly referred to as Straining Screws and are compatible with both chain and cable, making them popular in the caravanning industry. Technical specifications Material: Hot Dipped Galvanised Steel Specification: Federal Specifications FF-T-791b Type Form 1-class 4 Weight: 0.97 kg Dimensions (Inches): A - 0.50, J - 31.08, K - 19.08, M - 31.96, N - 19.96, R - 1.44, S - 0.72, X - 3.23, BB - 12.00 Other information Manufactured using Galvanised Steel for strength and rust protection Bodies have been heat treated for extra strength Eyes are forged for enhanced durability