The 1-1/8 Inch Hex Demolition Hammer (H90SG) makes improvements on previous models with greater power, increased performance, lower vibration and a universal tool retainer. The 15 amp motor powers an improved hammering mechanism, which more efficiently transfers energy to the bit, improving demolition performance. A new vibration absorbing main handle produces low full-load vibration, resulting in less user fatigue and greater productivity. This hammer employs a sealed grease system and auto-stop brushes for minimal maintenance and durability.