Thexton Manufacturing's Angeled Electrical Back Probe Kits, No. 490-M, provide the technician with an assortment of back probe pins which gives the user access to the back probe circuit without any obstructions. The new 490-M Back probe Pins also have a longer pin to reach circuits that were previously unreachable. This kit includes 10 straight pins, five 90-degree pins and five 45-degree pins.