The 4aH battery bundle comes with one Hyper Tough 4aH batter along with The Hyper Tough 12 Volt Cut-Off Tool. With a no-load speed of 19.000 RPM and featuring a Hyper Tough Brushless Motor, the Hyper Tough Cut-off tool delivers fast and accurate cutting for a wide range of materials. The 12V Max 1.5 AH lithium-ion battery provides 3-5 hours charge for tough cutting versatility, the 80007 ships with three accessories: 1x carbide cutting disc for multi material (wood, plastic, wood nails, plaster) at ?3" x ?0.4", 1x cutting disc for INOX at ?3" x 0.04" x ?0.4", 1x hex key.