Hornady 397141 A-Tip Custom Bullet Seating Stem 7mm Rem Mag 166 Grain These Seating stems Are Designed To Fit Hornady Custom Grade Dies, And Are machined To Fit The Profile Of The A-Tip Bullets To Seat Them as precisely as Possible Without Damaging Bullets. (Not Compatible With Other manufacturers Dies.) Caliber: 7mm Rem Mag Quantity: 1 Weight: 166 Gr Compatible With: A-Tip Match Bullets