TSK "Control Hub" 30G x 13mm (1/2") Ultra Thin Wall Sharp (Filler Needles) 100 Uses: Ultra thin wall Best flow rate 35% less extrusion force needed Reduced risk of leaking Special dermal filler needles that have an ULTRA Thin Wall that increases the inner diameter of a 27G needle up to 24% and the inner diameter of a 30G needle up to 17%. The ULTRA Thin Wall technology in combination with the extremely hard polymer preventing “flexing” of the hub when exposed to high pressures which ultimately prevents leakage and needle pop-off.