Precision CNC machined medical grade stainless steel
Knurled barrel provides added grip, and is reassuring in emergency situations
Airtight, watertight O-ring seal
100% Made in USA; Lifetime Warranty
Weight: 0.5 oz. / Inside diameter: 0.45 in. (11.5 mm) / Inside length of barrel: 0.55 in. (14 mm)