PLANS VIDEOS AIRCRAFT FAQ SHOP NOW! ask a pro contact shopping cart STOL King Ultra Pup Super Pup N3 Pup Stinger Aircraft Parts Main Category : Aircraft Parts- Pups, STOL King, Engine / Engine Parts Mag Drive Puck for two cylinder engine- steel [ enlarge ] Item Id: 8623686 MSRP: $49.95 Price: $49.95 In Stock: 8 Qty :   This Mag Drive Puck is made of steel to replace your aluminum puck once it is worn in the mag drive slot.