Explosion Proof Chain Hoists are custom designed with both single and twin hoists to be explosion proof. Its features include bronze trolley wheels and hook blocks, stainless steel wire rope, and spark proof chains for hand geared trolleys. Hoists of this type meet the standards set by the Underwriters Lab for Explosion Proof Applications. All electrical components meet the requirements for hazardous locations as per the National Electrical Code and have been manufactured according to the standards set.