4.5mm BBs, 1500's. Comes prepacked in an LDPE bottle w/ PP funnel cap (for tunneled / controlled dispensing) w/ threaded cone lid that comes off w/ two full turns. It is serrated at 0.25mm intervals for good traction. Has a retainer to keep the lid from falling off, but is frail and easily snaps loose. The cap itself screws off as well and has a scallop texture line to improve traction. Bottom end core is raised up to create an air cushion that assists slightly in placement impact. Plastic has casting seamlines.
Measured by weight not count. Thus actual quantities may slightly vary due to mass production.
This specific type is copper plated, 'copperhead'. This improves ballistic impact as opposed to the nickel plated. However, whilst sporting slightly better corrosion resistance, these will still corrode nevertheless. Take care to always keep these shut inside the bottle when not in use.