Specifications: 
UTG GL933 Polymer Magazine, for GLOCK, 33 Round, 9mm
Durable and Impact Resistant Glass Fiber Reinforced Matte Black Polymer Construction
Anti-tilt High Visibility Blue Follower and High Longevity Stainless Steel Spring for Reliable Feeding
33 Round Capacity with Left and Right Side Round Count Indicators at 10, 15, 20, 25, and 33
Easy Disassembly and Maintenance with Removable Flared Floor Plate
Compatible with Reversible Magazine Release for Left or Right-handed Users
For GLOCK 9mm Double Stack Pistols and Compatible Pistol Caliber Carbines, Large Platform Pistols, and Pistol Clones