This banger has a fully welded, seamless joint that's designed for longevity since it heats more evenly than standard weld bangers. A matching banger insert set is included, with a terp pearl that spins inside to stir melted concentrate and a central marble insert that helps prevent oil from getting sucked down the stem. Each banger has the signature Bear Quartz logo etched onto the joint connection. 10mm and 14mm male joint sizes are available with a 90 degree joint angle.