https://www.slackshop.cz/en/weblocks/131-soft-ring.html
Soft Ring - Universal slackline weblock to be used with a soft shackle or any other textile sling.
Universal weblock to be used with a soft shackle or any other textile sling. Perfect for projects that require minimal weight - Soft Ring weighs less than 40...
to be usedwith asoftringuniversal
https://www.petramslack.com/t-pl/shop-1/fortis-weblock
Fortis Weblock - Petram Slacklines
Klasyczny przyrząd do taśmy trickline o szerokości 5 cm
fortisweblockpetramslacklines