Air Venturi pellet pen .177 caliber holds up to 20 pellets and the .22 caliber holds up to 15 pellets. Load pellets head first. Pellet tins rattle, sometimes the lid comes off and you have to put your gun down to open them. The Pellet Pen is so much easier. Keep it in your pocket, pull it out and load a pellet. No fumbling. Easy to use, easy to carry. FeaturesCorrect pellet orientation every timeFastest loading & shootingMaximum stealth while huntingLoad your gun even while wearing glovesNo fumbling with awkward pellet containers in the fieldDesigned for breakbarrel air rifles and pistols