Davis Instruments - Shockles LineSnubber - 20" - Black - 2410. Eliminates shock loads on dock lines, towing lines, tie-downs and preventers. Progressive tension design with internal stretch limiter.. The patented internal line limiter is made of 2500 lb. (1140 kg) test nylon webbing. LineSnubber's outer sheath is 3500 lb. (1590 kg) test tubular nylon webbing that is UV resistant to protect internal parts. Shockles are strong, but they need to be rigged in-line so they never bear the full load alone. Six to 12″ (15-30 cm) of slack is recommended. Increase line slack between the attachment loops to a maximum of 12″ (30 cm) as loads increase.. LineSnubber has a maximum stretch of 16″ (40 cm) before the line limiter safely stops further stretching. The slack line may be wrapped around LineSnubber to "neaten" it up. Blue LineSnubber with two 316 Stainless Steel Clips. 20″ (51 cm) length when relaxed. Can stretch to a maximum length of 36″ (91 cm).. Features:. Size - 20". Color - Black. Mini