|This is one of the most handy accessories for your vertical feed Spyder, Rebel, Piranha or Spyder-compatible marker! This precision machined adapter by NW fits over your existing vertical adapter. It is held in place with set-screws but uses two o-rings to secure the loader. The o-rings provide a tight fit without damaging the loader neck like other feed adapters. The mid-rise helps eliminate jams and improves ball flow while maintaining a low vertical profile. Also fits the SFL E-mag and the Extreem E-Mag. High gloss chrome finish.