Vijaydeep Mould Accessories Pvt. Ltd. Offers Hardened Straight Block Set. Vijaydeep Mould Accessories Pvt. Ltd. Supplies standard tools, components & accessories for the tool room industry. Hardened Straight Block Set is manufactured as a standard accessory for the mould`s alignment. Hardened Straight Block Set is ready to use and should be fitted very precisely in mould for best performance. They are hardened and ground with the desired hardness. This block set can be used for core and cavity as well as sliding core alignment.