Tree Climber's Knot Book by Dirk Lingens Brand_Climbing Technology while the 25" version fits

while the 25" version fits the HS-137-22 and HS-137-24

Bartlett Brass — strong

Galvanized steel — corrosion-resistant for long-term outdoor use

22" top straps and steel split ring bottom straps for secure attachment

Tree Climber's Knot Book by Dirk Lingens Brand_Climbing Technology while the 25" version fitsThe Essential Knot Reference for Professional Arborists Written by well known German arborist and self confessed knot junkie Dirk Lingens, the Tree Climber's Knot Book is a must have reference for any arborist who wants to expand their knot knowledge. It features knots specifically selected for arborist applications including modern hitches like the Klemheist, the Distel, and the Machard with clear illustrations and practical evaluations comparing