Gravity feed woodchippers Timberwolf TW13/75A superb, cost effective, rugged and very powerful small chipper. Perfect for hire, landscapers and the domestic user with a large garden to maintain. It has a 13hp Honda engine and can accommodate brash up 75mm or 3".Timberwolf TW 18/100ESUndoubtedly, the best gravity feed chipper on the market. A road legal woodchipper that has 100mm or 4" capacity and is driven by an 18hp engine wieghing 375kgTimberwolf TW PTO/100GThe best small estate wood chipper on the market perfect for attaching to a tractor which is towed. This chipper has a 100mm or 4" capacity and requires a minimum of 18hp PTO power.