Profile: Stemlock, Inc. supplies blaster friendly products. We offer Stemlock gas bag, stemliner, stemalign, stemkone and stemlocker. We offer both vinegar gas bag and aerosol gas bag. Gas bags with a cavity can be used to block a void or cavity that the drilled hole has penetrated. Our stemlock stemliner is a blast hole liner that withstands the rigors of site installation. We offer both double wall and single wall stemliners. Our stemalign can be used to measure borehole inclination and borehole direction.