Redding - T7/Big Boss Primer Arm Assembly (Large) Lens System The three subsequent rings of

The three subsequent rings of each set have a squared face that grabs the patch keeping it in place

Illuminated reticle - Yes

Redding Neck Sizing Bushings have a external dimension of 1/2" OD X 3/8" long

- For easy closing of the shooting jacket

Redding - T7/Big Boss Primer Arm Assembly (Large) Lens System The three subsequent rings ofQuickly change primer cup & pin size by simply exchanging the entire primer arm assembly. Fits both the T 7 and Big Boss Presses. A reloader never knows when a part might break. Be prepared for anything with these high quality factory replacement parts that will have your Redding T 7 or Big Boss presses running like new.