Item Threaded screws Flat nails Dyna-bolts Spring washers
1 kg $2.50 $3.50 $4.50 $2.50
2kg $3.00 $4.00 $5.00 $3.00
3kg $3.50 $4.50 $5.50 $3.50
4kg $4.00 $5.00 $6.00 $4.00