This hot melt glue gun has endurable springs passed strict inspection more than 100,000 times testing. 3A fuse for each glue gun ensure 100% safety of end users.
No leakage within 20 minutes avoids the glue gun blocking or damage when laying and heating. 5 pieces 1500mAh high volume lithium batteries put in the hot glue gun enable 90 minutes long working time.
