This RSPKU series spill kit refill has a 30-gallon container capacity. Along with meeting the standards for 29 CFR, 40 CFR, 49 CFR, this spill kit refill includes 25 absorbent pads, four absorbent pillows, four absorbent socks, five disposal bags and ties, 6 tamper proof seals, emergency guide book, overpack, pair of gloves, safety goggles, emergency response handbook/instructions, and 25 pads. It is designed for use with SPKU Series.