Increment Borer 500 Mm/20″

Haglof has been producing tree drills for more than 70 years and Haglof offers the widest range of models, lengths and core diameters. Haglof tree drills are sold and used all over the world, in forests, in historical research and in various woodworking industries.

Haglof Increment Borers are classic instruments for fast and reliable results in age and growth monitoring. Haglof Increment Borers are also used to control wood density and quality, damage and decay, environmental pollution over time and chemical penetration.

Haglof Sweden increment borers are available in a wide variety of sizes, lengths and core diameters for all types of wood and trees. Produced with high quality Swedish Steel with PTFE coating on the borer bit to protect against rust and resin and to reduce friction. The solid borer bit with a barrel-shaped tip ensures an easy start and removal from the tree. All new, improved extractor made from stainless steel with steel cap. A grip-friendly blue handle ensures high performance and durability.

Complete Haglof Sweden Increment Borers include handle, PTFE coated borer bit and extractor.

The blue Haglof increment Borer is produced with high quality steel. A characteristic blue plastic for a better grip and high field visibility covers Haglof borer handles. All borer handles undergo individual quality controls to assure durability and exact fit. The borer lock is tested to withstand high pressure.

The Haglof borer bit is produced with a PTFE one-coat for reduced friction with standard core diameters of 4.35 mm and 5.15 mm with 2- or 3- threading. Additional core diameters in 10 and 12mm are available in selected lengths. Standard core diameter and threading is 5.15 3-thread and the most sold borer lengths are 250, 300 and 400 mm. The coating also slows down corrosion processes. Another efficient way to avoid corrosion is to maintain borers clean, dry and lubricated with light oil at all times.