Today Kevin came over for another Neon full of pine and brought his 8 lb sledge and a Wood Grenade. WOW...That thing really does work. While it was a fair amount of work, he did split a 16" long round of elm that was easily 14" across. A good 10 or 15 wacks with the sledge but it split. No way my 6lb maul would do that round. I showed Kevin how the maul just bounced off. A good laugh. Kevin's gonna post the link to where to buy later.