Perko Spring Clamps 5/8" - 1-1/4" - Pair Free shipping for all orders over $50.00. 30 days returns. Sign up for great deals with Fishbrain Pro. Share Loading Facebook Like button... Perko Spring Clamps 5/8" - 1-1/4" - Pair Free shipping for all orders over $50.00. 30 days returns. Sign up for great deals with Fishbrain Pro. Share Loading Facebook Like button...