A lighter weight and a lighter pull in line spring. Sleepy Creek Manufactor's 56 lb. version with tempered cupped slides has a long spring that applies a softer light load while the shorter spring takes the lunge of a heavier critter. The mis-shaped slides help prevent rust from locking them. For those who wish an even lighter assembly, remove the short spring for 40 lb. version. Designed to be setup with double swivels and j-hooks that are not included. SKU# scinline Our Price $2.49, 12/$24.99, 60/$109.99