The all blades set is a great starter set - excellent for basic carving and sculpting. You can use up to two tandem blade combinations to meet many of your woodworking needs. The all blades set contains both Lancelots and both Squires plus our Universal Nut. All Saw Chain Blade Set. Accessories fit only 4-1/2" (115mm) angle grinders. Can be used individually or in 6 different tandem combinations. 5/8"(16mm) center holes.