I keep on getting this error when trying to register tools "The method register(String, Supplier<? extends I>) in the type DeferredRegister<Item> is not applicable for the arguments (String, CustomPickaxeItem)"

I cant find a fix without my game crashing, is there another way I should be trying to register tools/armour?

	//Armor & Tools
	public static final RegistryObject<Item> PICKAXERUBY = ITEMS.register("beryl_pickaxe", new CustomPickaxeItem(ToolMaterialList.berylT, -1, 0.6F, new Item.Properties().tab(Main.GEMSTONES_GROUP)));

And here's my deferred registry code

	public static final DeferredRegister<Item> ITEMS = DeferredRegister.create(ForgeRegistries.ITEMS, Main.MODID);

Heres my custom pickaxe code

package djofox.gemstones.items;

import net.minecraft.item.IItemTier;
import net.minecraft.item.PickaxeItem;

public class CustomPickaxeItem extends PickaxeItem {

	
	
	public CustomPickaxeItem(IItemTier tier, int attackDamageIn, float attackSpeedIn, Properties builder) {
		super(tier, attackDamageIn, attackSpeedIn, builder);

	}
}

 

Yes, you are passing in an Item instead of a supplier of an item. I would suggest taking another read over the docs.