The Overcast Foot is used to keep the fabric edges from curling up when you overlock the edges to clean finish the seam. The metal bar in the center of the  Overcast Foot holds the fabric and stitches in place as you overcast.

Delivery Available State List In India - 

Andhra Pradesh (Amaravati) Arunachal Pradesh (Itanagar) Assam (Dispur) Bihar (Patna) Chhattisgarh (Raipur) Goa (Panaji) Gujarat (Gandhinagar) Haryana (Chandigarh) Himachal Pradesh (Shimla) Jharkhand (Ranchi) Karnataka (Bangalore) Kerala (Thiruvananthapuram) Madhya Pradesh (Bhopal) Maharashtra (Mumbai) Manipur (Imphal) Meghalaya (Shillong) Mizoram (Aizawl) Nagaland (Kohima) Odisha (Bhubaneshwar) Punjab (Chandigarh) Rajasthan (Jaipur) Sikkim (Gangtok) Tamil Nadu (Chennai) Telangana (Hyderabad) Tripura (Agartala) Uttarakhand (Dehradun) Uttar Pradesh (Lucknow) West Bengal (Kolkata)

Andaman and Nicobar Islands(Port Blair)
Chandigarh(Chandigarh)

Dadra and Nagar Haveli and Daman & Diu(Daman)

Jammu & Kashmir (Srinagar-S*, Jammu-W*)
Ladakh(Leh)

Lakshadweep(Kavaratti) Puducherry(Puducherry)