If you are looking for an automated pruner with extended reach that is both reliable as well as low on greenhouse gas emissions, the STIHL Pole Pruners HT 100, HT 101, HT130 and HT131 use the special 4-MIX low emissions engine.

HT100 (fixed shaft) – For a fixed length shaft that is sturdy to the cut, HT100 has a displacement of 31.4 cc or 1.9 cubic inches and generates 1kW or 1.3 bhp. Weighing 5.5kg or 12.1 lbs with the cutting attachment, it is both light and powerful.

HT101 (telescopic shaft) – This model uses the same motor as the HT100 but comes with a telescopic shaft, adjustable to reach up to 16 feet and is the STIHL Pole Pruner that combines efficient long-reach capabilities with compact storage ability.

HT130 (fixed shaft) – As a model that was designed with the same fixed shaft as the HT100 but with more torque and power, the HT130 will displace at 36.3 cc or 2.2 cubic inches, the engine produces 1.4kW or 1.9 bhp while it weights just slightly more than the 100 model at 4.8 kg or 12.8 lbs with the cutting attachment.

HT131 (telescopic shaft) – This model is different from the HT130 in that it comes with a telescopic extension shaft in the same fashion as the HT101.

Update: Stihl does not sell pruners online, for more options of great pruners see below:

Both the HT100 and HT101 models come with the same STIHL Pole Pruner at the end.

The HT130 and HT131 models are slightly modified STIHL Pole Pruner engines, for just a tad bit more torque and power, for those with a little heavier job to do.

All four models features a 4-MIX engine that complies to low-emission standards on greenhouse gases as well as offering excellent torque and power for that perfect cutting of small medium and large branches.

The STIHL Oilomatic chain is superb in design. The Ematic bar is made of stainless steel and will never rust.

With the special side-access chain tensioner, the pruning saw will always cut like new.

The oil tank has a toolless oil cap with retainer and a large-capacity easy-view oil tank.

For quick removal of debris the sprocket cutout is revolutionary and the gear driven oil pump makes sure that the STIHL Pole Pruner keeps on cutting for as long as needed.

The STIHL Pole Pruner is the best way to get the most reach out of your tree pruning and the most powerful torque for lower emissions that respect the environment, all in one.