TE Connectivity, TwistGrip Insulated Twist Bullet Connector, 0.64mm² to 3.26mm², 22AWG to 8AWG, 18.3mm Bullet diameter,

TwistGrip connectors or splices with square-wire spring threads which provide a positive grip and moulded 'wings' to enable a secure connection. TwistGrip twist-on connectors are made from tan or grey coloured UL 94V-2 flame retardant thermoplastic. Maximum operating temperature of 105°C, maximum rated voltage of 600 V for building wiring and 1000 V maximum in light fixtures, luminaries and signs. Wire range for these TwistGrip connectors is a versatile 22 AWG to 8 AWG (3 x 22 AWG Solid min, 4 x12 AWG max).They are for use with copper to copper connections only.

UL 486C, CSA 22.2 No. 188