30gr standar clunk for all CMJETS Tanks. If you want a different clunk, send a message for specification.

This fuel clunk works the same way as our UAT do , it will pick up every last drop and filters it before delivering it to the UAT.check out the video Below! 2 O-rings are surrounding the brass clunk to protect your Fuel tank against extreme Aerobatics. the Pickup has a changeable Nipple with G1/8 thread the same as our UAT so you can use different...

15 mm of diameter

30gr clunk with "O" rings. 17mm of diameter max.